Lubricator.



Patented Mar. 5, 190i.

F. BURGER.

LUBRICATOR.

(Application filed. Mar. 24, 1900.)

(No Iodel.)

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STATES FRANZ BURGER, OF FORT WAYNE, INDIANA, ASSIGNOR OF THREE-FOURTHSTOHENRY M. WILLIAMS, OF SAME PLACE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No: 669,195, dated March 5,1901,

Application filed March 24, 1900. Serial No. 10,088. (No model.)

- T ctZZ whom it may concern:

Beit known that I, FRANZ BURGER, a citize of the United States, residingat Fort Wayne, county of Allen, and State of Indiana, have inventedcertain new and useful Improvements in Lubricators, of which thefollowing v is a specification.

My invention relates to a continuous positive-feed lubricator, and hasfor its object to improve and simplify the construction of such devices;and the invention consists in a lubricator embodying the variousfeatures of construction and arrangement having the general mode ofoperation, substantially as hereinafter more particularly set forth.

Referring to the accompanying drawings, wherein I have shown a preferredembodiment of the invention, Figure 1 is a side view, partlyin section,showing the construction of the device. Fig. 2 is a perspective view ofthe automatically-operating device which connects the piston to thefeed-screw.

In the operation of various machines it is desirable to provide meansfor supplying a definite amount of lubricant and to supplyit positivelyand continuously during operation. Many lubricators have been suggesteddepending upon the use of steam, and while these have provedsatisfactory in some cases there are instances, such as in connectionwith the use of locomotives and other like operating machines, when themachineis operated without direct application of steamas, for instance,in running downgrades or operating through momentum or otherwise-' andthe so-called sight-feed lubricators fail to supply the properlubrication at such times. With my construction each and every movementof the part to be lubricated insures a proper lubrication, the lubricantbeing continuously under pressure, which pressure depends upon themovements of the parts to be lubricated or some parts connectedtherewith and not upon the power by which the movements are eifec-ted.My invention therefore comprises a lubricator which can be arranged inany convenient relation, preferably in the vicinity of the parts to belubricated, and which is so connected with the operating parts of themachine or engine that at each or any other desired movement the partswill receive a predetermined amount of 111- bricant.

Referring to the accompanying drawings,

it will be seen that my device comprises practically two complementaryparts or cylinders, one being shown in side view and the other insection, and these are connected so as to operate conjointly tocontinuously furnish a supply of lubricant. Moreover, the lubricant isunder pressure at all times and of course can be forced againststeam-pressure-as, for instance, int-he lubrication of cylinders ofengines and the like. By means of suitable pipes (not shown) any movingparts of the engine or machine may be properly lubricated. Thus A Arepresent two cylinders mounted parallel to each other on a suitablesupport, as the plate A and while these cylinders may be of any desiredshape they are preferably provided with reduced extensions A Mounted ineach of the cylinders is a piston B, which in the form shown is of twodiameters, the portion B being adapted to fit the main cylinder A andthe portion B being adapted to fit the cylinder extension A and act as aguide for B. One or both of these portions of the piston are providedwith some sort of packing, and in the present instance I have showntheportion B as being pro-.

vided with a cup-shaped packing b, while the portion B fits in thecylinder extension A provision being made to allow the fluid orlubricant to pass between its outer side and the inner surface of thecylinder extension. In practice I prefer to provide the cylinderextension A with a number of longitudinal grooves a, through whichcommunication is established between themain cylinder and the cylinderextension. The piston B is hollow, being closed at its lower end, as atb, with its upper end 19 open, and it serves to receive the means formoving the piston in the cylinder, which means in the present instancecomprises the right and left hand screw-threaded plug 0. Theconstruction of this screw-threaded plug is well understood. The threadscross each other and unite with each other at the end, and arranged inconnection with the piston is some means for connecting the piston withthe plug so that they will move with proper relation to each other. Inthe present instance the portion B of the piston is cross-bored at b inwhich is fitted a rod 13*, having on its face or inner end acrescent-shaped piece I), adapted to engage the threads of the plug 0.This piece is pivoted orswiveled to the rod 'B 'and travels in thethreads in a manner well understood, and when it reaches the end of thethreads,where the right and left hand threads unite, it passes from oneto the other, so as.

to reverse the relative movements between the plug and piston.

Some means must be provided for supporting the plug, and in the presentinstance the cylinder-head D not only closes the cylinder,

but furnishes a bearing for the plug, it preferably beingproVided'wi'th-a'n enlargementc, fitting a recess in the inner portionof the'h'ead. Some suitable means must be used for-operating the plug,and while this may vary I have shown a'gear-wheel E, mounted on the'endof the plug, which engages with a similar gearwheel on the plug of theadjacent cylinder, so that the plugs will be ope'ratedwith properrelation to each other. Attached to one of the plugs in the presentinstance is a wormwheel E, engaging a worm on a worm-shaft E and on thisshaft is mounted a ratchet- Wheel E. This shaft is supported in anysuit-able way, as by a bracket F, and in the present instance attachedto the cylinder and suitablysupported on the worm-shaft or otheri wiseis an arm F, carrying a dogor pawl F engaging the ratchet-wheel, andthis arm is operated in any suitable way from any moving part of themachine orengine, as by means of a connecting-rod F ,so thatitsmovementswill be timed in relation tothe movements of the parts to be lubricated.

The lower ends of the cylinders A A are closed by suitable heads G,which in the present instance are provided with hollow extensions G,preferably closed by *plugs G and these extensions are connected by apipe G having a nozzle G by means of which 'connection may be made withasuit'able source of supply of the lubricant. Between this pipe and thecylinders there should be a suitable 'valve, and I have shown asuction-valve g,

normally under the stress of'aspring g',which tends to close the valve,but which permits it to be opened to allow the lubricant to 'flo'w intothe cylinders.

The cylinders are provided with some sort of connections to deliver thelubricant to the place or places desired, and in the-present instance Ihave shown the cylinders as united by a tube H, having a delivery-nozzleH'and provided with valves h, which in the present instance'are underthe stress of a spring'h, tending to close them, but which permitseither one or the other to yield to allow the lubricant to pass from theone or the other cylinder through the delivery-nozzle H.

Such being the preferred constructionof my device, its operation willreadily be understood. Motion being imparted to the plugs, one willrotate in a direction to move its corresponding piston upward, while theother piston will move downward at a corresponding rate of speed. Thepiston moving upward will draw a supply of lubricant through the nozzleG pi-pe G by the valve g into the cylinder until the piston reaches thelimit of its stroke, when the crescent-shaped piece 12 will cause thereversal of the direction of movement of the plug and the piston willtravel downward, closing the valve 9 and forcing the lubricant throughthe valve h out of the delivery-nozzle H. Meanwhile the piston in "theother "cylinder is operating in the same Way, except that its movementsare so timed that when one piston is "bein g filled "with lubricant the'dther is discharging the lubricant, and viceversa. in "this way it willbeseen that there is constant feed under pressure of the lubricant,the-*am'ouirt of feed being determined by the relative movements of theparts being supplied with lubricant.

The whole construction of th'edevice is'simpleand not liable to getoutof orde'rand is practically automatic in its operation.

What I claim is 1. A continuous, positive-feed lubrica'to'r, comprisingtwo cylinders mounted parallel to each other and each provided with areduced extension, a fluid-tight piston in each cylinder, an'exten'sionon each piston projecta reduced extension provided with longitudin'algrooves, a piston in each cylinder each piston having'an enlargedportion and a reduced portion, ascrew-threaded plug in each piston,means conuectingeachplug with each piston, and automatically -operatingmeans 'to reverse the movements of said pistons when they reach theirlimit of movement in either direction, and valve-controlled inlet andoutlet openings in each extension, substantially as set forth.

A continuous, positive-feed lubricator,

comprising t'wo'cylinders mounted parallel to each other and eachprovided with a reduced extension, a piston 'in each cylinder, anextension on each piston projecting into the 'reducedex'tension of itscylinder with a space between them to "afford a fluid-passage f'rointheex'ten'sion to'the cylinder, means for reciprocating sa'id pistonssimultaneously in opposite directions,automatically-operating means toreverse the movements of "said pistons when they reach their limit ofmovement in either direction, valve-controlled inlet and outlet openingsin each extension, a supplypipe common to both inlet-openings, and adischarge-pipe with which both of said discharge-openings communicate,substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

FRANZ BURGER.

Witnesses:

GEO. D. CRANE, J. BURGER.

